title: Improving targets for the prevention of drug use disorders: sociodemographic predictors of transitions across drug use stages in the national comorbidity survey replication.
abstract: OBJECTIVE
  Models of drug use etiology and prevention require precise information concerning the expression of population-based risk factors across the continuum of drug use. However, the majority of previous epidemiologic research on this topic has not addressed transitions between specific drug stages. The present investigation examined the sociodemographic predictors of progression across six stages of drug use in the National Comorbidity Survey Replication (NCS-R), a nationally representative household survey of the U.S. population conducted between February, 2001 and April, 2003.
  
  
  METHODS
  Lifetime history of opportunity to use illicit substances, initial drug use, and DSM-IV drug use disorders were collected using in-person structured diagnostic interviews.
  
  
  RESULTS
  The median age of first opportunity to use drugs as well as drug use, abuse and dependence each occurred prior to age 20, while the median remission from abuse and dependence occurred at 26 and 30 years, respectively. Most sociodemographic variables, in particular sex and ethnicity, demonstrated highly differential associations with transitions depending on the stage examined.
  
  
  CONCLUSIONS
  The findings may partially explain the effectiveness of strategies designed to reduce drug use, abuse and dependence, and indicate that increased correspondence is needed between available epidemiologic data and existing models of etiology or prevention.
authors.affiliation: National Scientific Research Center (CNRS 5231), University of Bordeaux, 146 rue Léo Saignat, 33076 Bordeaux, France. Joel.Swendsen@u-bordeaux2.fr
authors.forename: Joel
authors.initials: J
authors.lastname: Swendsen
authors.forename: James C
authors.initials: JC
authors.lastname: Anthony
authors.forename: Kevin P
authors.initials: KP
authors.lastname: Conway
authors.forename: Louisa
authors.initials: L
authors.lastname: Degenhardt
authors.forename: Lisa
authors.initials: L
authors.lastname: Dierker
authors.forename: Meyer
authors.initials: M
authors.lastname: Glantz
authors.forename: Jianping
authors.initials: J
authors.lastname: He
authors.forename: Amanda
authors.initials: A
authors.lastname: Kalaydjian
authors.forename: Ronald C
authors.initials: RC
authors.lastname: Kessler
authors.forename: Nancy
authors.initials: N
authors.lastname: Sampson
authors.forename: Kathleen R
authors.initials: KR
authors.lastname: Merikangas
mesh_terms: D000293:Adolescent; D000328:Adult; D015331:Cohort Studies; D004522:Educational Status; D005260:Female; D006801:Humans; D007407:Interviews as Topic; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance / Q000379:methods*; D015995:Prevalence; D012307:Risk Factors; D019966:Substance-Related Disorders / Q000145:classification / Q000453:epidemiology* / Q000517:prevention & control*; D014481:United States / Q000453:epidemiology; D055815:Young Adult